Who is the man over there? Is it Mr. Wu? — It him but I am not quite sure.A. may beB. ma

问题补充：

Who is the man over there? Is it Mr. Wu?

— It him, but I am not quite sure.

A. may be

B. maybe

C. is

D. must be

答案：

(答案→)A. may be

B. maybe

C. is

D. must be

解析：句意：--那边的那个男的是谁？是吴先生吗？--可能是他，但是我不是很确定。A肯能是 B也许（副词）C是 D一定是；根据后面的回答，不确定。故选A.